ACIDS AND ALKALIS Combined science (single award) questions on acids and alkalis 0.0 / 5 ? ChemistryAcids, bases and saltsGCSEEdexcel Created by: 80sCreated on: 10-01-19 16:30 How is the Universal indicator used? To determine how strongly or weakly acidic or alkalina a substance is 1 of 13 What is the PH scale? A scale to clasify solutions using numbers from 0 to 14 2 of 13 What number on the PH scale indicates that a substance is neutral? 7 3 of 13 What colour will an acidic solution turn? (not universal indicator) red 4 of 13 What colour will an alkaline solution turn? (not universal indicator) blue 5 of 13 What is the only substance that will turn blue if it is tested with RED litmus paper? Alkaline solution 6 of 13 What is the only substance that will turn red if it is tested with BLUE litmus paper? Acidic solution 7 of 13 What are Acids a source of? hydrogen ions 8 of 13 What are Alkalines a source of Hydrochloric ions 9 of 13 Complete: Hydrogen ion = .. (......) H+ (Acidic) 10 of 13 Complete: Hydrogen ion = ... (.......) OH+ (Alkalis) 11 of 13 Explain: the process of Neutrolisation When an acid is added to an alkali it creates a neutrol solution 12 of 13 What PH does a solution that is neutral have? 7 13 of 13
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